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7   is a variable-length checksum. This has advantages for transport of multimedia
9   fed into the codec instead of being discarded due to a failed checksum test.
41   very easy: simply add `IPPROTO_UDPLITE' as the last argument of the socket(2)
54   To make use of the partial checksum coverage facilities requires setting a
74       that of a traffic filter: when enabled, it instructs the kernel to drop
77       packets with a minimum coverage of 20 are admitted:
86   A detailed discussion of UDP-Lite checksum coverage options is in section IV.
116   If the sender specifies a value of 0 as coverage length, the module
117   assumes full coverage, transmits a packet with coverage length of 0
125   The receiver specifies the minimum value of the coverage length it
126   is willing to accept.  A value of 0 here indicates that the receiver
127   always wants the whole of the packet covered. In this case, all
131   cases the default of 8 is assumed.
143   will always will be ignored, while the value of
153   of UDP-Lite packets is determined by the size of the send buffer. The
154   minimum size of the send buffer is 2048 (defined as SOCK_MIN_SNDBUF
166   UDP-Lite packet is split into several IP packets, of which only the
180   The coverage packet covers the UDP-Lite header and 848 bytes of the
186   As an example of what happens when one UDP-Lite packet is split into
202   sums the contents of the entire first two packets, plus 15 bytes of
206   MTU of 1280 bytes and a write buffer of 3356 bytes. If the checksum
210   checksummed. Suppose we have a checksum coverage of 3062. The buffer
211   of 3356 bytes will be split into the following fragments:
213     Fragment 1: 1280 bytes carrying  1232 bytes of UDP-Lite data
214     Fragment 2: 1280 bytes carrying  1232 bytes of UDP-Lite data
215     Fragment 3:  948 bytes carrying   900 bytes of UDP-Lite data
217   The first two fragments have to be checksummed in full, of the last
230   and can (with newer versions of netstat) be viewed using
236    InDatagrams:     The total number of datagrams delivered to users.
238    NoPorts:         Number of packets received to an unknown port.
241    InErrors:        Number of erroneous UDP-Lite packets. Errors include:
247                         length than that of incoming packet
251    OutDatagrams:    Total number of sent datagrams.
272                     University of Aberdeen
274                     Department of Engineering